Cite

William Smith Mason autograph collection, 1910

MLA

Mason, William Smith, 1866-. William Smith Mason autograph collection, 1910. Box 1, folder 1. 1910. https://collections.library.yale.edu/catalog/10016853.

APA, 6th edition

Mason, William Smith, 1866-. (["Box 1, folder 1"])(1910)[William Smith Mason autograph collection, 1910]. https://collections.library.yale.edu/catalog/10016853.